Results: The mean age at right ventricular outflow tract reconstruction was 11.8 +/- 8 days, and hospital survival was 95.0% for the tetralogy of Fallot group and 90.7% for the truncus arteriosus group. Overall freedom from reoperation and reintervention was 76.2% +/- 14.8% in the nontransannular patch group and 59.5% +/- 6.8% in the transannular patch group;

both were significantly greater than seen in patients receiving either aortic (0%) or pulmonary (6.7% +/- 4.2%) homografts (P < .05). There was no difference between aortic and pulmonary homografts. Among patients with tetralogy of Fallot/pulmonary stenosis, there was no difference in 10-year freedom from reoperation/reintervention between the transannular (70.8% +/- 7.4%) and nontransannular patch methods (76.2% +/- 14.8%, P = .53). At 10 years, the diagnosis of tetralogy of Fallot/pulmonary stenosis this website was associated with a greater freedom from reoperation/reintervention (68% +/- 6.8%) when compared with tetralogy Nirogacestat nmr of Fallot/pulmonary atresia (5.3% +/- 4.3%, P = .0001), tetralogy of Fallot/absent pulmonary valve ( 0%, P =

.00315), or truncus arteriosus (4.2% +/- 2.8%, P = .0001). Eight patients (4 with tetralogy of Fallot/pulmonary stenosis, 3 with tetralogy of Fallot/pulmonary atresia, and 1 with tetralogy of Fallot/absent valve) underwent placement of a transannular patch with monocusp valve. Among this group, freedom from reoperation/reintervention is 41.7% +/- 20.5% at 2.5 years. Monocusp function, as determined by means of echocardiographic analysis MK-0518 nmr obtained at 11.4 +/- 11.7 months ( range, 0.3-31 months) showed an average monocusp gradient of 23.5 +/- 26.1 mm Hg, and 3 (37.5%) patients had more than moderate pulmonary regurgitation.

Conclusions: The durability of neonatal right ventricular outflow tract reconstruction is diagnosis and method dependent. Anatomy allowing

right ventricular outflow tract patching (either transannular or nontransannular) provides a durability advantage compared with that seen with a homograft. There was no difference in performance between aortic and pulmonary homografts, and the monocusp valve has limited durability and effectiveness in neonatal right ventricular outflow tract surgery. The long-term outcomes of transannular and nontransannular patching techniques for neonatal repair of tetralogy of Fallot/pulmonary stenosis are similar.”
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